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A rotary hammer, also called rotary hammer drill [1] is a power tool that can perform heavy-duty tasks such as drilling and chiseling hard materials. [2] It is similar to a hammer drill in that it also pounds the drill bit in and out while it is spinning. However, rotary hammers use a piston mechanism instead of a special clutch.
Robert Bosch GmbH (/ b ɒ ʃ /; German: ⓘ), commonly known as Bosch (styled BOSCH), is a German multinational engineering and technology company headquartered in Gerlingen, Baden-Württemberg, Germany. The company was founded by Robert Bosch in Stuttgart in 1886. [2] Bosch is 94% owned by the Robert Bosch Stiftung, a charitable institution. [3]
German company Bosch produced the first "Bosch-Hammer" around 1932 in mass production. The US company Milwaukee Electric Tool Corporation states that in 1935, it was selling a lightweight 1 ⁄ 4 in (6.4 mm) electric hammer drill (cam-action). [15] Hand-cranked percussion drills were made in the UK in the mid-twentieth century. [16]
The first radial-configuration engine known to use a twin-row design was the 160 hp Gnôme "Double Lambda" rotary engine of 1912, designed as a 14-cylinder twin-row version of the firm's 80 hp Lambda single-row seven-cylinder rotary, however reliability and cooling problems limited its success.
Bosch Palace, the official residence of the U.S. ambassador to Argentina; Huis ten Bosch, an official palace of the Dutch royal family in The Hague, Netherlands; Huis Ten Bosch Station, a train station for the theme park and train service of the same name in Japan
[6] Harpax: 36 BC Rome: A catapult-shot grapnel created by Marcus Vipsanius Agrippa for use against Sextus Pompey during the naval battles of the Sicilian Revolt. Carroballista: 101 AD Rome: A handheld siege engine which shot bolts that were smaller than those in other forms of ballistae and generally made of metal. Catapulta: Rome
GSh-6-23M has the highest rate of fire out of any autocannon so far. [6] The GSh-6-23 is used by the Sukhoi Su-24 attack aircraft, the MiG-31 interceptor aircraft, and the now-obsolete Sukhoi Su-15 among others. However, after two Su-24s were lost because of premature shell detonation in 1983, and because of some other problems with gun usage ...